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12V 20A/24V 10A AC-to-DC LFP Portable Battery Charger

SKU: RBC20A1P-US
$151.99
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  • Supports lithium batteries with activation to exit BMS protection safely.
  • 100–240VAC input; includes ring terminal & alligator clip cables.
  • 3-stage intelligent charging with over 89% efficiency for lithium cells.
  • Five protections: short-circuit, overcurrent, overvoltage, overtemperature, reverse polarity.
  • Plug-and-play design with fanless, fast-dissipating shell, plus bracket and screws.
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Description
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Specs
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12V 20A AC-DC LFP Portable Battery Charger

Renogy 12V 20A AC charger is designed for LifePO4 Battery. The charger has a 3-stage intelligent charging design (CC/CV/trickle) to ensure it charges the lithium battery quickly and efficiently. This battery charger has 5-layer protection functions to realize comprehensive monitoring and protection of the battery. This charger is suitable for RVs, motorbikes, boats, and camper-van.

3-Stage Intelligent Charging Design

Automatically switches between constant current, constant voltage, and trickle charging to deliver fast, safe, and efficient power while protecting and extending your battery’s life.

Lithium Battery Activation

Quickly reactivates batteries from low-voltage or low-temperature protection with status monitoring.

Build-in Safety Protection

Built-in protections guard against short circuit, over-current, over/under voltage, and reverse polarity, ensuring safe and reliable charging.

Silent and Efficient Heat Dissipation

Fast cooling and silent operation with patented fanless design, keeping your charging worry-free.

Easy & Reliable Installation

The charger comes with two battery cables—alligator clips for quick, portable use and ring terminals for secure, long-term charging—so you can handle any charging scenario. IP65 protection expands usage possibilities, and the screw-mount design keeps installation stable and reliable, delivering a safe, versatile, and hassle-free charging experience.

Package Includes

14.6V 20A AC to DC LFP Portable Battery Charger

x 1

DC Output Adapter Ring Terminal Cables

x 1

DC Output Adapter Alligator Clips Cable

x 1

Mounting Screws ×6 (2 extra)

x 1

User Manual

x 1

Renogy 12V 20A AC-DC LFP Portable Battery Charger

Specification

Input Voltage Range
100V to 240V (50Hz / 60Hz)
Input Current
5A Max
No-Load Input Power Dissipation
≤3W
Maximum Output Voltage
14.6V (±0.2V)
Output Current
20A
Efficiency
≥89%
Operating Temperature Range
-4°F to 113°F / -20°C to 45°C
Storage Temperature Range
-40°F to 158°F / -40°C to 70°C
Relative Humidity
5% to 95%
Protection Rating
IP65
Dimensions (L x W x H)
9.25 x 3.94 x 2.13 in / 235 x 100 x 54 mm
Weight
3.97 lbs / 1.8 kg

Warranty

RBC20A1P
2-year

Certifications

Certifications
CE, UKCA，FCC,RCM, RoHS

Resources Download

User Manual

Download

Warranty

Download

Frequently Asked Questions

What kind of batteries is suitable for this charger?

1. This charger is specially designed for lithium battery charging.

2. This is a 12V dedicated lithium battery charger, where 12V refers to the voltage platform of the battery. The 12V voltage platform has one form: the battery itself is a 12V battery, and the other is formed by connecting multiple small voltage platform batteries in parallel. For example, two 12V lithium batteries are connected in parallel can form a 12V voltage.
To sum up, this charger is designed for 12V lithium iron phosphate.

Can this charger wake up a lithium battery that triggers BMS protection?

Yes, this charger has a lithium battery activation function. When the lithium battery cannot be charged and discharged after triggering the BMS protection, this charger can be used to wake up the lithium battery.

What capacity of the batteries does this charger support?

The charger delivers a maximum current of 20A, so please ensure the battery’s maximum charging current is ≥20A. With a charging efficiency of 89%, a 100Ah lithium battery takes approximately 5 hours to fully charge.

What are the phenomena of this charger in different charging stages?

1.Precharge Stage – Delivers 3.8A until the voltage reaches the set level. LED slowly flashes red.

2.Fast Charge Stage – Charges rapidly with up to 20A constant current. Switches to constant voltage at 3.6V. LED still slow flashing red.

3.Constant Voltage / Trickle Stage – Current gradually drops for trickle charging. LED solid green indicates full charge.

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